Lolobau

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 4.92°S
  • 151.158°E

  • 858 m
    2814 ft

  • 252130
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Lolobau.

The Global Volcanism Program has no Weekly Reports available for Lolobau.

The Global Volcanism Program has no Bulletin Reports available for Lolobau.

Lolobau volcano sits astride the western rim of a 6-km-wide caldera, which formed about 12,000 years ago. The 8 x 13 km, oval-shaped Lolobau Island is located just off the coast of eastern New Britain. A small lake occupies the SW part of the caldera. A small lava dome (Hulu) caps Mount Lolobau, which has a 0.8 x 1.1 km summit crater that is breached to the NE. Flank cones are found along the coast of the largely submerged volcano. Several vents within the caldera along an E-W-trending line on the eastern flank of Mount Lolobau have been active during historical time. The latest eruptions took place during the early-20th century.

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1911 1912 Confirmed 4 Historical Observations East flank (Sili)
[ 1908 ] [ Unknown ] Uncertain    
1904 Aug 9 1905 Oct 18 (in or after) Confirmed 4 Historical Observations East flank (Sili, Malo), Hulu ?
1100 ± 30 years Unknown Confirmed 4 Radiocarbon (uncorrected) Hulu

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Synonyms

Duportail

Cones

Feature Name Feature Type Elevation Latitude Longitude
Giwu Peak Cone
Malo Cone - Crater 280 m 4° 55' 0" S 151° 11' 0" E
Sili
    Sile
Cone - Crater 280 m 4° 55' 0" S 151° 11' 0" E
Tiwongo Cone 30 m 4° 57' 29" S 151° 12' 29" E
Tobal Cone - Crater 320 m 4° 55' 0" S 151° 11' 0" E

Domes

Feature Name Feature Type Elevation Latitude Longitude
Hulu Dome 595 m 4° 55' 0" S 151° 10' 0" E
Lolobau volcano (left) sits astride the western rim of a caldera that formed about 12,000 years ago on the 8 x 13 km, oval-shaped Lolobau Island. It is seen here from the south across Expectation Strait along the NE coast of New Britain. The peak at the right lies on the eastern rim of the 6-km-wide caldera. Several vents within the caldera, occupying an E-W-trending line on the eastern flank of Mount Lolobau, have been active during historical time.

Photo by Robert Citron, 1970 (courtesy of William Melson, Smithsonian Institution).
The oval-shaped island of Lolobau lies just off the northern coast of New Britain, west of Cape Deschamp. Lolobau was constructed over the western rim of a 6-km-wide caldera. Eruptive activity from vents on the flank of Lolobau inside the caldera have continued into the 20th century.

Photo by Robert Citron, 1970 (courtesy of William Melson, Smithsonian Institution).
Lolobau volcano (left center) sits astride the western rim of a 6-km-wide caldera, which formed about 12,000 years ago on the 8 x 13 km, oval-shaped Lolobau Island. Lolobau is seen here from the south beyond the lower flanks of Ulawun volcano. The smaller peak at the right is located along the eastern caldera rim. Several vents within the caldera along an E-W-trending line on the eastern flank of Mount Lolobau have been active during historical time. The latest eruptions took place during the early-20th century.

Photo by Robert Citron, 1970 (courtesy of William Melson, Smithsonian Institution).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Cooke R J S, Johnson R W, 1978. Volcanoes and volcanology in Papua New Guinea. Geol Surv Papua New Guinea Rpt, 78/2: 1-46.

Fisher N H, 1957. Melanesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 5: 1-105.

Newhall C G, Dzurisin D, 1988. Historical unrest at large calderas of the world. U S Geol Surv Bull, 1855: 1108 p, 2 vol.

Patia H, McKee C O, 1993. Lolobau volcano, Papua New Guinea - cyclic basaltic to rhyodacitic eruptions and phreatomagmatic activity. IAVCEI 1993 Canberra Conf Abs, (revised abs).

Volcano Types

Caldera
Stratovolcano
Pyroclastic cone(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Major
Basalt / Picro-Basalt
Dacite
Andesite / Basaltic Andesite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
7,243
7,243
9,659
62,340

Affiliated Databases

Large Eruptions of Lolobau Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.